
Lon Hagler Reservoir Fishing Regulations
Larimer County, Colorado · 2026 size limits, bag limits, and seasons
Lon Hagler Reservoir is a reservoir in Larimer County, Colorado. It has its own fishing regulations for 2 species, including Largemouth Bass and Smallmouth Bass. These rules replace Colorado's statewide limits on this water.
Map of Lon Hagler Reservoir

Fish with special rules on Lon Hagler Reservoir
Tap a fish for identification tips, size records, and the best bait.
Lon Hagler Reservoir limits by species (2026)
| Species | Size limit | Daily bag | Season |
|---|---|---|---|
| – | Catch & release only | Year-round | |
| – | Catch & release only | Year-round |
– means no limit is listed for this water. Rules not shown here follow Colorado's statewide regulations.
Plan your Lon Hagler Reservoir trip
Lon Hagler Reservoir fishing: common questions
What fish have special regulations on Lon Hagler Reservoir?
2 species have rules specific to Lon Hagler Reservoir: Largemouth Bass and Smallmouth Bass.
What is the largemouth bass limit on Lon Hagler Reservoir?
Largemouth Bass are catch and release only on Lon Hagler Reservoir.
What is the smallmouth bass limit on Lon Hagler Reservoir?
Smallmouth Bass are catch and release only on Lon Hagler Reservoir.
Is Lon Hagler Reservoir catch and release?
Some rules on Lon Hagler Reservoir are catch and release only, covering Largemouth Bass and Smallmouth Bass. Check the table for the section and dates that apply.
Do Colorado statewide fishing rules apply on Lon Hagler Reservoir?
Where Lon Hagler Reservoir has its own rule for a species, that rule replaces the statewide limit. For species not listed on this page, Colorado's statewide regulations apply. Regulations are set by the Colorado Parks and Wildlife; confirm with the official 2026 regulations before keeping a fish.
Other Colorado waters with special regulations
- South Platte River
- Yampa River
- Colorado River
- White River
- Poudre River · Larimer
- Gunnison River
- Blue River · Grand, Summit
- Roaring Fork River
- Arkansas River · Chaffee , Lake , Fremont , Pueblo
- Animas River · La Plata
- Eagle River · Eagle
- Taylor River
Take Lon Hagler Reservoir rules on the water
Identify your catch, check if it's a keeper, and log it. CatchVault is on iOS, with Android on the way.

